<template>
    <transition v-if="show" name="modal">
        <div class="modal" @click.self="clickMask">
            <div class="modal-dialog" :class="modalClass">
                <div class="modal-content">

                    <div class="modal-header">
                        <slot name="header">
                            <a type="button" class="close" @click="cancel"><i class="ion-close-round"></i></a>
                            <h4 class="modal-title">
                                <slot name="title">
                                    {{title}}
                                </slot>
                            </h4>
                        </slot>
                    </div>

                    <div class="modal-body">
                        <slot></slot>
                    </div>

                    <div class="modal-footer" v-if="showFooter">
                        <slot name="footer">
                            <button type="button" :class="cancelClass" @click="cancel">{{cancelText}}</button>
                            <button type="button" :class="confirmClass" @click="confirm">{{confirmText}}</button>
                        </slot>
                    </div>

                </div>
            </div>
        </div>
    </transition>
</template>

<script>
export default {
    props: {
        show: {
            type: Boolean,
            default: false
        },
        title: {
            type: String,
            default: 'Modal'
        },
        small: {
            type: Boolean,
            default: false
        },
        large: {
            type: Boolean,
            default: false
        },
        full: {
            type: Boolean,
            default: false
        },
        force: {
            type: Boolean,
            default: false
        },
        confirmText: {
            type: String,
            default: 'OK'
        },
        cancelText: {
            type: String,
            default: 'Cancel'
        },
        confirmClass: {
            type: String,
            default: 'btn btn-info'
        },
        cancelClass: {
            type: String,
            default: 'btn btn-outline'
        },
        closeWhenConfirm: {
            type: Boolean,
            default: false
        },
        showFooter: {
            type: Boolean,
            default: false
        }
    },
    data () {
        return {
            duration: null
        };
    },
    computed: {
        modalClass () {
            return {
                'modal-lg': this.large,
                'modal-sm': this.small,
                'modal-full': this.full
            }
        }
    },
    created () {
        if (this.show) {
            document.body.className += ' modal-open';
        }
    },
    beforeDestroy () {
        document.body.className = document.body.className.replace(/\s?modal-open/, '');
    },
    watch: {
        show (value) {
            if (value) {
                document.body.className += ' modal-open';
            } else {
                if (!this.duration) {
                    this.duration = window.getComputedStyle(this.$el)['transition-duration'].replace('s', '') * 1000;
                }
                window.setTimeout(() => {
                    document.body.className = document.body.className.replace(/\s?modal-open/, '');
                }, this.duration || 0);
            }
        }
    },
    methods: {
        confirm () {
            this.$emit('confirm');
        },
        cancel () {
            this.$emit('cancel');
        },
        clickMask () {
            if (!this.force) {
                this.cancel();
            }
        }
    }
};
</script>

<style scoped>
    .modal {
        display: block;
        position: fixed;
        z-index: 9998;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, .5);
        transition: opacity .3s ease;
    }

    .modal-header {
        padding-bottom: 25px;
        border: none;
    }

    .modal-dialog {
        display: table;
        vertical-align: middle;
        margin: 30px auto;
    }

    .modal-content {
        background-color: #fff;
        border-radius: 5px;
        box-shadow: 0 2px 8px rgba(0, 0, 0, .33);
        transition: all .3s ease;
        font-family: Helvetica, Arial, sans-serif;
    }

    .modal-enter {
        opacity: 0;
    }

    .modal-leave-active {
        opacity: 0;
    }

    .modal-enter .modal-content,
    .modal-leave-active .modal-content {
        -webkit-transform: scale(1.1);
        transform: scale(1.1);
    }
    .btn-outline {
        color: #fff;
    }
</style>